BiGELOW. — Explorations in the Gulf of Maine. 



PLATE 6. 



Occurrences of Medusae, Ctenophores and Siphonophores. 



S. Staurophora mertensii. 



A. Aglantha digitale. 

 P. Pleurobrachia pileus. 



B. Bolinopsis infundibulum. 

 H. Physophora hydrostatica. 



The curves mark the off-shore limit of abundant Aureha and Cyanea. 



